U.S. Army Air Corps Technical Manual TM 1-219 Basic Photography 1941-07-01.
"This manual serves as a reference to basic photographic principles and to the technique of military photography. It includes elementary photography, chemistry, sensitized materials, optics, filters, photographic sensitometry, ground camera photography, negative making, printing, copying, lantern slides, color photography, and laboratory operations." OCR is not that great.
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